TROUBLESHOOTING
5.2.3 Printer Mechanism Repair
The table below describes how to isolate problems with the printer mechanism. To replace or adjust printer mechanism parts, refer to Chapter 3, Disassembly and Assembly, and Chapter 4, Adjustments. If a symptom recurs following a repair attempt, look for other possible causes and solutions in the table below.
Table
Symptom | Cause | Checkpoint | Solution |
The CR motor | The transport locking | Verify that the transport locking bracket | Remove bracket. |
does not operate. | bracket (used to hold | has been removed. | (Refer to Section |
| the carriage in place |
| 3.1.) |
| when the printer is |
|
|
| moved) has not been |
|
|
| removed. |
|
|
| Foreign objects are | Manually move the carriage to see if | Remove any foreign |
| lodged in the gears or | the motor rotates. | objects. |
| elsewhere (e.g. paper |
|
|
| dust on the carriage |
|
|
| encoder belt) in the |
|
|
| mechanism. |
|
|
| The CR motor is | Measure the coil resistance of the CR | Replace the CR |
| defective. | motor. It should be approximately 1.66 | motor. |
|
| ohms + 10 %. |
|
| The carriage timing | Manually check the carriage timing belt | Perform the carriage |
| belt is defective. | tension. | timing belt tension |
|
|
| adjustment, as |
|
|
| described in Section |
|
|
| 4.1.2. |
| The carriage guide | Check whether the carriage moves | Perform the carriage |
| shaft parallelism | smoothly when moved manually. | guide shaft |
| value is incorrect. | (Check that foreign objects are not | parallelism |
|
| lodged in the printer mechanism.), | adjustment, as |
|
|
| described in Section |
|
|
| 4.1.5. |
| The CR encoder | Check the waveform for the carriage | Replace the CR |
| sensor is defective. | encoder signal. (Refer to Table | encoder sensor. |
| The carriage encoder | Check the encoder belt (below the | Replace or clean the |
| belt is damaged or | carriage timing belt). | carriage encoder |
| covered with dust. |
| belt. |
The carriage | The printhead FPC | Check the continuity of the common | Replace the FPC. |
moves, but no | common wires are | wires for the printhead FPC. |
|
printing is | broken. |
|
|
performed. |
|
|
|
|
|
|
Rev. B | ||
